Staying at Saifon's place is one of my best Airbnb experience. The unit is spacious (It looks small in the pictures but believe me its HUGE!)
The unit is very clean and fully equipped with the basic necessities for a comfortable stay. The unit's security is good and the staff are very friendly.
The place is very near to Ratchathewi BTS station (less than 7 minutes walk). I also tried walking from the place to Fashion Mall and it only took me 15 minutes to get there. MBK, Siam Paragon Mall as well as River City Complex is just a few minutes drive from Saifon's place.
I have only two words to describe Saifon's place: WOW and SUPERB.
She even gave us takeaway food on our last day of stay and even waited until we were able to get a taxi to the airport.
I would surely return to her place the next time I visit Bangkok. The place is highly recommended.